Effects of imperfect grooves in full-floating ring bearings on dynamics of a turbocharger rotor

• Autorzy: Smolík Luboš , Polach Pavel , Hajžman Michal
• Języki publikacji: EN

Abstrakty

EN

Full-floating ring bearings cause nonlinear vibrations of turbocharger rotors, and they have higher hydrodynamic power losses in comparison with rolling element bearings. Both issues can be improved if several shallow axial grooves are machined in the inner surface of the floating ring. The grooves are usually not manufactured precisely in order to keep production costs as low as possible. This work investigates the role of the machining errors on the dynamics of the turbocharger rotor. More specifically, the effects of the precisely-machined grooves on the dynamics of the system are explained. Then the influence of the uncertainties on both vibrations and hydrodynamic power losses in the bearings is investigated.

Słowa kluczowe

EN

rotor; dynamics; uncertainty; bearings

PL

wirnik; dynamika; niepewność; łożyska

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2020
• Tom: Vol. 31, nr 2
• Strony: art. no. 2020226
• Opis fizyczny: Bibliogr. 14 poz., il. kolor., rys., wykr.

Twórcy

autor

Smolík Luboš

• University of West Bohemia, Univerzitní 2732/8, 301 00 Plzeň, Czech Republic

autor

Polach Pavel

• Research and Testing Institute Plzeň, Tylova 1581/46, Plzeň, Czech Republic

autor

Hajžman Michal

• University of West Bohemia, Univerzitní 2732/8, 301 00 Plzeň, Czech Republic

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).